Final Process - Trane Voyager YH Series Installation, Operation And Maintenance Manual

Microchannel (MCHE) Coils
NOTICE
Coil Damage!
DO NOT use any detergents with microchannel coils.
Use pressurized water or air ONLY, with pressure no
greater than 600psi. Failure to do so could result in coil
damage.
For additional information regarding the proper
microchannel coil cleaning procedure, refer to RT-
SVB83*-EN.
Due to the soft material and thin walls of the MCHE coils,
the traditional field maintenance method recommended
for Round Tube Plate Fin (RTPF) coils does not apply to
microchannel coils.
Moreover, chemical cleaners are a risk factor to MCHE due
to the material of the coil. The manufacturer does not
recommend the use of chemical cleaners to clean
microchannel coils. Using chemical cleaners could lead to
warranty claims being further evaluated for validity and
failure analysis.
The recommended cleaning method for microchannel
coils is pressurized water or air with a non-pinpoint nozzle
and an ECU of at least 180 with pressure no greater than
600 psi. To minimize the risk of coil damage, approach the
cleaning of the coil with the pressure washer aimed
perpendicular to the face of the coil during cleaning.
Optimum clearance between the sprayer nozzle and the
microchannel coil is 1"–3".
Table 24. Sample maintenance log
Current
Ambient Compr.
Date Temp F/C Oil Level
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok 
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
RT-SVX26R-EN
Refrigerant Circuit #1
Suct. Disch. Liquid
Press. Press Press
Psig/kPa Psig/kPa Psig/kPa

Final Process

For future reference, you may find it helpful to record the
unit data requested below in the blanks provided.
(1) Complete Unit Model Number:
_____________________________________________________
(2) Unit Serial Number:
_____________________________________________________
(3) Wiring Diagram Numbers (from unit control panel)
— schematic(s)
_____________________________________________________
_____________________________________________________
— connection(s)
_____________________________________________________
____________________________________________________
_
Super- Sub-cool Compr.
heat F/C F/C Oil Level
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok 
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
Refrigerant Circuit #2
Suct. Disch. Liquid
Press. Press Press
Psig/kPa Psig/kPa Psig/kPa
Maintenance
Super- Sub-cool
heat F/C F/C
55